The LGWR box points to a cylinder named Online Redo Log File #1. Next to it are the numbers 1, 4, and 7. This cylinder points to a cylinder named Online Redo Log File #2. Next to it are the numbers 2, 5, and 8. This cylinder points to a cylinder named Online Redo Log File #3. Next to it are the numbers 3, 6, and 9. Cylinder #3 points back up to cylinder #1.